logs

[madunix]

I have alot of logs with gz extension can I delete them without
effecting my system RHEL5 or how can i minimize producing them ...

[root at linux1 log]# ls *.gz
boot.log.10.gz  boot.log.7.gz  cron.4.gz      maillog.2.gz
messages.27.gz  secure.1.gz    spooler.17.gz  up2date.14.gz
up2date.8.gz ......boot.log.5.gz   cron.30.gz     maillog.28.gz
messages.25.gz  secure.18.gz    spooler.15.gz  up2date.12.gz
up2date.9.gz
boot.log.6.gz   cron.3.gz      maillog.29.gz  messages.26.gz
secure.19.gz    spooler.16.gz  up2date.13.gz


Thanks
madunix